Home / 2,818.10-3,888.33-1,638.47

Finding the Fourth Proportional to 2,818.10, 3,888.33 and 1,638.47

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Solution

The fourth proportional to 2,818.10, 3,888.33 and 1,638.47 is: 2,260.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,818.10 : 3,888.33 = 1,638.47 : x
  2. Step 2: Convert to fraction form
    2,818.10/3,888.33 = 1,638.47/x
  3. Step 3: Cross multiply
    2,818.10x = 3,888.33 × 1,638.47
  4. Step 4: Simplify right side
    2,818.10x = 6,370,912.06
  5. Step 5: Solve for x
    x = 6,370,912.06/2,818.10
  6. Step 6: Final answer
    x = 2,260.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.